Earlier, Inspector Craig Lockhart told the hearing he was alarmed by the video of the incident.

He gave evidence that there was no need for the tasering given the number of officers present.

The Inspector said he believed it was pre-meditated and that Senior Constable Troy Tomlin walked out knowing he was going to use the weapon on Mr Spratt.

Inspector Lockhart said if Mr Spratt was so violent he should have been put in a padded cell.

Another Inspector, Stephen Stingemore, told the inquiry he had failed to notice a crucial error in a police flow chart, released to the media, that suggested Mr Spratt had been violent before the tasering.

Inspector Stingemore testified his investigation found Mr Spratt had not been aggressive.

Commissioner Karl O'Callaghan is due to give evidence before the CCC hearing tomorrow.